| @/****************************************************************************** |
| @ * |
| @ * Copyright (C) 2018 The Android Open Source Project |
| @ * |
| @ * Licensed under the Apache License, Version 2.0 (the "License"); |
| @ * you may not use this file except in compliance with the License. |
| @ * You may obtain a copy of the License at: |
| @ * |
| @ * http://www.apache.org/licenses/LICENSE-2.0 |
| @ * |
| @ * Unless required by applicable law or agreed to in writing, software |
| @ * distributed under the License is distributed on an "AS IS" BASIS, |
| @ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| @ * See the License for the specific language governing permissions and |
| @ * limitations under the License. |
| @ * |
| @ ***************************************************************************** |
| @ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| @*/ |
| |
| |
| .text |
| .p2align 2 |
| .global ixheaacd_conv_ergtoamplitude_armv7 |
| ixheaacd_conv_ergtoamplitude_armv7: |
| |
| STMFD sp!, {r4-r12, r14} |
| |
| LDR R5, [SP, #44] |
| LDR R4, [SP, #40] |
| MOVW R14, #0x1FF |
| MOVW R10, #0x5A82 |
| |
| LOOP1: |
| |
| LDRSH R6, [R2], #2 |
| LDRSH R7, [R2], #2 |
| MOV R12, #0 |
| MOV R9, #-16 |
| MOVS R6, R6 |
| BLE ENDIF1_1 |
| CLZ R8, R6 |
| SUB R8, R8, #17 |
| SUB R7, R7, R8 |
| MOV R11, R6, LSL R8 |
| |
| MOV R11, R11, ASR #5 |
| ANDS R11, R11, R14 |
| |
| BIC R11, R11, #1 |
| LDRH R12, [R11, R5] |
| |
| TST R7, #1 |
| ADDNE R7, R7, #3 |
| SMULWBNE R12, R12, R10 |
| |
| |
| MOV R9, R7, ASR #1 |
| ENDIF1_1: |
| STRH R12, [R2, #-4] |
| STRH R9, [R2, #-2] |
| |
| |
| LDRSH R6, [R3], #2 |
| LDRSH R7, [R3], #2 |
| MOV R8, #0 |
| MOV R9, #-16 |
| MOVS R6, R6 |
| BLE ENDIF1_2 |
| CLZ R8, R6 |
| SUB R8, R8, #17 |
| SUB R7, R7, R8 |
| MOV R11, R6, LSL R8 |
| MOV R11, R11, ASR #5 |
| ANDS R11, R11, R14 |
| |
| BIC R11, R11, #1 |
| LDRH R8, [R11, R5] |
| TST R7, #1 |
| ADDNE R7, R7, #3 |
| |
| SMULWBNE R8, R8, R10 |
| |
| |
| MOV R9, R7, ASR #1 |
| ENDIF1_2: |
| STRH R8, [R3, #-4] |
| STRH R9, [R3, #-2] |
| |
| |
| |
| LDRSH R6, [R4], #2 |
| LDRSH R7, [R4], #2 |
| MOV R8, #0 |
| MOV R9, #-16 |
| MOVS R6, R6 |
| BLE ENDIF1_3 |
| CLZ R8, R6 |
| SUB R8, R8, #17 |
| SUB R7, R7, R8 |
| MOV R11, R6, LSL R8 |
| MOV R11, R11, ASR #5 |
| ANDS R11, R11, R14 |
| |
| BIC R11, R11, #1 |
| LDRH R8, [R11, R5] |
| TST R7, #1 |
| ADDNE R7, R7, #3 |
| |
| SMULWBNE R8, R8, R10 |
| |
| |
| MOV R9, R7, ASR #1 |
| ENDIF1_3: |
| STRH R9, [R4, #-2] |
| |
| SUB R6, R1, R9 |
| SUBS R6, R6, #4 |
| |
| RSBLE R6, R6, #0 |
| MOVGT R8, R8, ASR R6 |
| MOVLE R8, R8, LSL R6 |
| STRH R8, [R4, #-4] |
| |
| SUBS R0, R0, #1 |
| BGT LOOP1 |
| LDMFD sp!, {r4-r12, r15} |
| |
| |
| |
| |
| |